HTML5 Introduction
1. HTML5 History
HTML4.01 –1999.12 HTML5 – 2014.10– Done (8 years) In2006, WHATWG&W3C, decide to create a new version ofHTML In2008, the first draft has been published. In2012, Make sure the final version of HTML5 In2013, Publish the draft version of HTML5.1 In2014.10, Done and publish with tears In2016, publish HTML5.1 for a plan (W3C).
2. Support of main browser
IE9+, Chrome, Firefox, Safari,Opera and domestic browsers
Total:550
Date:2014.12.18
3. HTML5 new attributes
3.1 Semantic
Div, table à<article> <aside> <figcaption> <figure> <footer><header> <hgroup> <nav> <section> <time>
3.2 OFFLINE & STORAGE
Cookie: 4kb
Html5: 5M
Invoke method: Window.localStorage
Set value: localStorage.a = 3; localStorage["a"] = "sfsf"; localStorage.setItem("b","isaac"); Get value: var a1 = localStorage.a; var a2 = localStorage["a"]; var b = localStorage.getItem("b"); Clear item: localStorage.removeItem("c");
3.3 Device access
Microphones and camera
3.4 Connectivity
Server-Sent Event and WebSockets
3.5 MultiMedia
Video:
Video format: MP4 (H.264+AAC); OGV (Ogg Theora + Ogg Vorbis); WebM(VP8)
3.6 3D、Graphics & Effects
SVG、Canvas
3.7 Performance and Integration
XMLHttpRequest2:fixed cross domain issue
Before:Jsonp[<script>] and access http in background
3.8 CSS3
More and stronger style
3.9 Local DB
DB path: C:\Users\cxji.CSICN\AppData\Local\Google\Chrome\UserData\Default\databases\ Databases.db
4. Advantages and disadvantages
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